Computer Book » security http://www.the-computer-book.com Computer and online product guide Sat, 04 Feb 2012 11:18:50 +0000 http://wordpress.org/?v=2.8.1 en hourly 1 Secure Image Retrieval Based on Visual Content and Watermarking Protocol http://www.the-computer-book.com/uncategorized/secure-image-retrieval-based-on-visual-content-and-watermarking-protocol/ http://www.the-computer-book.com/uncategorized/secure-image-retrieval-based-on-visual-content-and-watermarking-protocol/#comments Fri, 30 Sep 2011 14:09:53 +0000 admin http://www.the-computer-book.com/uncategorized/secure-image-retrieval-based-on-visual-content-and-watermarking-protocol/ As an interesting application on cloud computing, content-based image retrieval (CBIR) has attracted a lot of attention, but the focus of previous research work was mainly on improving the retrieval performance rather than addressing security issues such as copyrights and user privacy. With an increase of security attacks in the computer networks, these security issues become critical for CBIR systems. In this paper, we propose a novel two-party watermarking protocol that can resolve the issues regarding user rights and privacy.

]]> http://www.the-computer-book.com/uncategorized/secure-image-retrieval-based-on-visual-content-and-watermarking-protocol/feed/ 0 Enforcing Role-Based Access Control for Secure Data Storage in the Cloud http://www.the-computer-book.com/uncategorized/enforcing-role-based-access-control-for-secure-data-storage-in-the-cloud/ http://www.the-computer-book.com/uncategorized/enforcing-role-based-access-control-for-secure-data-storage-in-the-cloud/#comments Fri, 30 Sep 2011 14:09:53 +0000 admin http://www.the-computer-book.com/uncategorized/enforcing-role-based-access-control-for-secure-data-storage-in-the-cloud/ In recent times, there has been increasing interest in storing data securely in the cloud environment. To provide owners of data stored in the cloud with flexible control over access to their data by other users, we propose a role-based encryption (RBE) scheme for secure cloud storage

]]> http://www.the-computer-book.com/uncategorized/enforcing-role-based-access-control-for-secure-data-storage-in-the-cloud/feed/ 0 Turn Your Webcam into a Security Camera http://www.the-computer-book.com/uncategorized/turn-your-webcam-into-a-security-camera/ http://www.the-computer-book.com/uncategorized/turn-your-webcam-into-a-security-camera/#comments Fri, 16 Sep 2011 12:23:26 +0000 admin http://www.the-computer-book.com/uncategorized/turn-your-webcam-into-a-security-camera/ Almost every laptop and many desktops have built-in webcams of varying quality. Some people use these religiously to talk to friends, video conference for work and even to shoot short YouTube videos. However, when you are not at home, a webcam can be used as a security camera.

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Turn Your Webcam into a Security Camera

]]> http://www.the-computer-book.com/uncategorized/turn-your-webcam-into-a-security-camera/feed/ 0 In-Depth Review of Every Facebook Security and Privacy Setting Part 3 http://www.the-computer-book.com/uncategorized/in-depth-review-of-every-facebook-security-and-privacy-setting-part-3/ http://www.the-computer-book.com/uncategorized/in-depth-review-of-every-facebook-security-and-privacy-setting-part-3/#comments Wed, 15 Jun 2011 11:43:51 +0000 admin http://www.the-computer-book.com/uncategorized/in-depth-review-of-every-facebook-security-and-privacy-setting-part-3/ Previously in our series, we reviewed several settings that you should pay special attention to, in order to customize your Facebook account to your own individual security and privacy preferences. In the final part of our series, we will conclude by reviewing the rest of the features that Facebook offers.

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In-Depth Review of Every Facebook Security and Privacy Setting Part 3

]]> http://www.the-computer-book.com/uncategorized/in-depth-review-of-every-facebook-security-and-privacy-setting-part-3/feed/ 0 In-Depth Review of Every Facebook Security and Privacy Setting Part 2 http://www.the-computer-book.com/uncategorized/in-depth-review-of-every-facebook-security-and-privacy-setting-part-2/ http://www.the-computer-book.com/uncategorized/in-depth-review-of-every-facebook-security-and-privacy-setting-part-2/#comments Tue, 14 Jun 2011 11:33:32 +0000 admin http://www.the-computer-book.com/uncategorized/in-depth-review-of-every-facebook-security-and-privacy-setting-part-2/ Previously, we explained and reviewed several Facebook settings that you can adjust to your own personal preferences to make Facebook more or less secure.

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In-Depth Review of Every Facebook Security and Privacy Setting Part 2

]]> http://www.the-computer-book.com/uncategorized/in-depth-review-of-every-facebook-security-and-privacy-setting-part-2/feed/ 0 Check Websites for Security Threats Using Internet Explorer 9′s SmartScreen Filter http://www.the-computer-book.com/uncategorized/check-websites-for-security-threats-using-internet-explorer-9%e2%80%b2s-smartscreen-filter/ http://www.the-computer-book.com/uncategorized/check-websites-for-security-threats-using-internet-explorer-9%e2%80%b2s-smartscreen-filter/#comments Mon, 18 Apr 2011 11:16:48 +0000 Master http://www.the-computer-book.com/uncategorized/check-websites-for-security-threats-using-internet-explorer-9%e2%80%b2s-smartscreen-filter/ As more users worldwide have connected to the Internet, more and more security threats have surfaced on websites. As web use continues to grow, this trend is likely to increase as well

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Check Websites for Security Threats Using Internet Explorer 9′s SmartScreen Filter

]]> http://www.the-computer-book.com/uncategorized/check-websites-for-security-threats-using-internet-explorer-9%e2%80%b2s-smartscreen-filter/feed/ 0 Report an Unsafe Website to Microsoft in Internet Explorer 9 http://www.the-computer-book.com/uncategorized/report-an-unsafe-website-to-microsoft-in-internet-explorer-9/ http://www.the-computer-book.com/uncategorized/report-an-unsafe-website-to-microsoft-in-internet-explorer-9/#comments Fri, 15 Apr 2011 11:52:21 +0000 Master http://www.the-computer-book.com/uncategorized/report-an-unsafe-website-to-microsoft-in-internet-explorer-9/ The Internet is full of websites that are phishing for your private information or contain malicious code that can jeopardize the security of your PC. Using a safety feature built in to IE9, you can inform Microsoft when you think you’ve found an unsafe website.

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Report an Unsafe Website to Microsoft in Internet Explorer 9

]]> http://www.the-computer-book.com/uncategorized/report-an-unsafe-website-to-microsoft-in-internet-explorer-9/feed/ 0 Best Free Open Source Software Programs for Windows http://www.the-computer-book.com/uncategorized/best-free-open-source-software-programs-for-windows/ http://www.the-computer-book.com/uncategorized/best-free-open-source-software-programs-for-windows/#comments Sat, 09 Apr 2011 11:51:16 +0000 Master http://www.the-computer-book.com/uncategorized/best-free-open-source-software-programs-for-windows/ The best quality commercial software can cost hundreds and even thousands of dollars. If you can’t afford this expensive software, you can often find free open source software with the same features for free

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Best Free Open Source Software Programs for Windows

]]> http://www.the-computer-book.com/uncategorized/best-free-open-source-software-programs-for-windows/feed/ 0 Heterogeneous Signcryption with Key Privacy http://www.the-computer-book.com/uncategorized/heterogeneous-signcryption-with-key-privacy/ http://www.the-computer-book.com/uncategorized/heterogeneous-signcryption-with-key-privacy/#comments Tue, 29 Mar 2011 14:24:25 +0000 admin http://www.the-computer-book.com/uncategorized/heterogeneous-signcryption-with-key-privacy/ A signcryption scheme allows a sender to produce a ciphertext for a receiver so that both confidentiality and non-repudiation can be ensured. It is built to be more efficient and secure, for example, supporting insider security, when compared with the conventional sign-then-encrypt approach. In this paper, we propose a new notion called heterogeneous signcryption in which the sender has an identity-based secret key while the receiver is holding a certificate-based public key pair

]]> http://www.the-computer-book.com/uncategorized/heterogeneous-signcryption-with-key-privacy/feed/ 0 A Secure Key Establishment Protocol for ZigBee Wireless Sensor Networks http://www.the-computer-book.com/uncategorized/a-secure-key-establishment-protocol-for-zigbee-wireless-sensor-networks/ http://www.the-computer-book.com/uncategorized/a-secure-key-establishment-protocol-for-zigbee-wireless-sensor-networks/#comments Tue, 29 Mar 2011 14:24:25 +0000 admin http://www.the-computer-book.com/uncategorized/a-secure-key-establishment-protocol-for-zigbee-wireless-sensor-networks/ ZigBee is a wireless sensor network standard that defines network and application layers on top of IEEE 802.15.4’s physical and medium access control layers. In the latest version of ZigBee, enhancements are prescribed for the security sublayer but we show in this paper that problems persist. In particular, we show that the end-to-end application key establishment protocol is flawed and we propose a secure protocol instead

]]> http://www.the-computer-book.com/uncategorized/a-secure-key-establishment-protocol-for-zigbee-wireless-sensor-networks/feed/ 0 Use Microsoft’s Optimizing Tools to Keep your Windows 7 Computer Running Fast http://www.the-computer-book.com/uncategorized/use-microsoft%e2%80%99s-optimizing-tools-to-keep-your-windows-7-computer-running-fast/ http://www.the-computer-book.com/uncategorized/use-microsoft%e2%80%99s-optimizing-tools-to-keep-your-windows-7-computer-running-fast/#comments Thu, 24 Mar 2011 12:25:03 +0000 Master http://www.the-computer-book.com/uncategorized/use-microsoft%e2%80%99s-optimizing-tools-to-keep-your-windows-7-computer-running-fast/ You see a lot of products out there purporting to help you get back that speed that your computer has lost over time as you’ve cruised the Internet picking up cookies, installed programs and maybe sometimes unplugged your computer before remembering to shut it off. Microsoft apparently understands that computers running their operating system need some tweaking and/or maintenance from time to time, so that’s why they’ve included some tools to help users get back some, it not all, of the speed they’ve lost.

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Use Microsoft’s Optimizing Tools to Keep your Windows 7 Computer Running Fast

]]> http://www.the-computer-book.com/uncategorized/use-microsoft%e2%80%99s-optimizing-tools-to-keep-your-windows-7-computer-running-fast/feed/ 0 How to Record, Edit and Use Macros in OpenOffice Writer http://www.the-computer-book.com/uncategorized/how-to-record-edit-and-use-macros-in-openoffice-writer/ http://www.the-computer-book.com/uncategorized/how-to-record-edit-and-use-macros-in-openoffice-writer/#comments Sat, 05 Mar 2011 11:53:55 +0000 Master http://www.the-computer-book.com/uncategorized/how-to-record-edit-and-use-macros-in-openoffice-writer/ Macros are sequences of keystrokes or commands that can be saved in OpenOffice. You can use macros to automate frequent tasks, such as typing your name, address, telephone number or email address. The simplest way to create a macro is to use the built-in macro recorder that comes with the OpenOffice suite of software

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How to Record, Edit and Use Macros in OpenOffice Writer

]]> http://www.the-computer-book.com/uncategorized/how-to-record-edit-and-use-macros-in-openoffice-writer/feed/ 0 Set Security Options When Exporting a PDF from OpenOffice Writer http://www.the-computer-book.com/uncategorized/set-security-options-when-exporting-a-pdf-from-openoffice-writer/ http://www.the-computer-book.com/uncategorized/set-security-options-when-exporting-a-pdf-from-openoffice-writer/#comments Fri, 04 Feb 2011 12:06:48 +0000 admin http://www.the-computer-book.com/uncategorized/set-security-options-when-exporting-a-pdf-from-openoffice-writer/ OpenOffice Writer offers a number of useful and full-featured options when it comes to exporting a document as a PDF. Some of these options include setting open passwords and permission passwords on documents you want to protect.

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Set Security Options When Exporting a PDF from OpenOffice Writer

]]> http://www.the-computer-book.com/uncategorized/set-security-options-when-exporting-a-pdf-from-openoffice-writer/feed/ 0 Export an OpenOffice Writer Document as a PDF http://www.the-computer-book.com/uncategorized/export-an-openoffice-writer-document-as-a-pdf/ http://www.the-computer-book.com/uncategorized/export-an-openoffice-writer-document-as-a-pdf/#comments Thu, 03 Feb 2011 12:04:24 +0000 admin http://www.the-computer-book.com/uncategorized/export-an-openoffice-writer-document-as-a-pdf/ The Portable Document Format (PDF) is a convenient method for creating and distributing a number of document types without having to worry about which applications a reader has on his/her computer. OpenOffice includes the ability to export Writer documents as PDFs

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Export an OpenOffice Writer Document as a PDF

]]> http://www.the-computer-book.com/uncategorized/export-an-openoffice-writer-document-as-a-pdf/feed/ 0 Add Footnotes and Endnotes to an OpenOffice Writer Document http://www.the-computer-book.com/uncategorized/add-footnotes-and-endnotes-to-an-openoffice-writer-document/ http://www.the-computer-book.com/uncategorized/add-footnotes-and-endnotes-to-an-openoffice-writer-document/#comments Thu, 06 Jan 2011 11:25:57 +0000 Master http://www.the-computer-book.com/uncategorized/add-footnotes-and-endnotes-to-an-openoffice-writer-document/ A full-featured word processor, OpenOffice Writer contains many of the same features as the more popular Microsoft Word. Included as a time-saving feature is the ability to quickly and automatically add footnotes and endnotes to a Writer document. However, first you must decide whether your document really needs a footnote or an endnote.

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Add Footnotes and Endnotes to an OpenOffice Writer Document

]]> http://www.the-computer-book.com/uncategorized/add-footnotes-and-endnotes-to-an-openoffice-writer-document/feed/ 0 What is Blackberry Messenger? http://www.the-computer-book.com/uncategorized/what-is-blackberry-messenger/ http://www.the-computer-book.com/uncategorized/what-is-blackberry-messenger/#comments Tue, 21 Dec 2010 12:25:08 +0000 admin http://www.the-computer-book.com/uncategorized/what-is-blackberry-messenger/ Blackberry Messenger is a secure instant messaging application that is unique to Blackberry devices. It uses the Blackberry PIN, which is unique to each Blackberry, to send messages from device to device.

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What is Blackberry Messenger?

]]> http://www.the-computer-book.com/uncategorized/what-is-blackberry-messenger/feed/ 0 Restore Firefox Security Warnings http://www.the-computer-book.com/uncategorized/restore-firefox-security-warnings/ http://www.the-computer-book.com/uncategorized/restore-firefox-security-warnings/#comments Tue, 14 Dec 2010 11:50:20 +0000 Master http://www.the-computer-book.com/uncategorized/restore-firefox-security-warnings/ When you first install Firefox, a number of warnings are turned on by default. Over time, you or the other users of your PC may have opted to turn off or skip certain warning messages

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Restore Firefox Security Warnings

]]> http://www.the-computer-book.com/uncategorized/restore-firefox-security-warnings/feed/ 0 Restore Firefox Security Warnings http://www.the-computer-book.com/uncategorized/restore-firefox-security-warnings/ http://www.the-computer-book.com/uncategorized/restore-firefox-security-warnings/#comments Tue, 14 Dec 2010 11:50:20 +0000 Master http://www.the-computer-book.com/uncategorized/restore-firefox-security-warnings/ When you first install Firefox, a number of warnings are turned on by default. Over time, you or the other users of your PC may have opted to turn off or skip certain warning messages

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Restore Firefox Security Warnings

]]> http://www.the-computer-book.com/uncategorized/restore-firefox-security-warnings/feed/ 0 5 WordPress Plugins for Adding Slideshows and Featured Content to Your Blog http://www.the-computer-book.com/uncategorized/5-wordpress-plugins-for-adding-slideshows-and-featured-content-to-your-blog/ http://www.the-computer-book.com/uncategorized/5-wordpress-plugins-for-adding-slideshows-and-featured-content-to-your-blog/#comments Mon, 29 Nov 2010 12:34:22 +0000 admin http://www.the-computer-book.com/uncategorized/5-wordpress-plugins-for-adding-slideshows-and-featured-content-to-your-blog/ Using featured content slideshows with your WordPress blog is a great way to add visual appeal. It also gives your readers a convenient way to read specific posts, without having to browse through several pages. Sites like Yahoo and AOL even use featured content slideshows on their homepages, to hype certain articles

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5 WordPress Plugins for Adding Slideshows and Featured Content to Your Blog

]]> http://www.the-computer-book.com/uncategorized/5-wordpress-plugins-for-adding-slideshows-and-featured-content-to-your-blog/feed/ 0 Use Windows Firewall to Block Out All Incoming Connections to Windows 7 http://www.the-computer-book.com/uncategorized/use-windows-firewall-to-block-out-all-incoming-connections-to-windows-7/ http://www.the-computer-book.com/uncategorized/use-windows-firewall-to-block-out-all-incoming-connections-to-windows-7/#comments Mon, 01 Nov 2010 12:03:22 +0000 Master http://www.the-computer-book.com/uncategorized/use-windows-firewall-to-block-out-all-incoming-connections-to-windows-7/ With breaches in home computer security at an all time high, it is no wonder why Microsoft built the Windows Firewall application right in to the last few versions of Windows. Using Windows Firewall, you can lock out all incoming connections to maximize your computer’s security

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Use Windows Firewall to Block Out All Incoming Connections to Windows 7

]]> http://www.the-computer-book.com/uncategorized/use-windows-firewall-to-block-out-all-incoming-connections-to-windows-7/feed/ 0 Efficient On-line/Off-line Signature Schemes Based on Multiple-Collision Trapdoor Hash Families http://www.the-computer-book.com/uncategorized/efficient-on-lineoff-line-signature-schemes-based-on-multiple-collision-trapdoor-hash-families/ http://www.the-computer-book.com/uncategorized/efficient-on-lineoff-line-signature-schemes-based-on-multiple-collision-trapdoor-hash-families/#comments Thu, 28 Oct 2010 16:06:34 +0000 Master http://www.the-computer-book.com/uncategorized/efficient-on-lineoff-line-signature-schemes-based-on-multiple-collision-trapdoor-hash-families/ The first on-line/off-line signature scheme introduced by Even et al. in 1990 has two problems: (a) impractical signature length and (b) a one-time use of signature generated during the off-line phase. In 2001, Shamir and Tauman significantly shortened the length of the signature by using trapdoor hash families introduced by Krawczyk and Rabin in 2000.

]]> http://www.the-computer-book.com/uncategorized/efficient-on-lineoff-line-signature-schemes-based-on-multiple-collision-trapdoor-hash-families/feed/ 0 AntiFreeze – A Backup Program to the Windows Task Manager http://www.the-computer-book.com/uncategorized/antifreeze-%e2%80%93-a-backup-program-to-the-windows-task-manager/ http://www.the-computer-book.com/uncategorized/antifreeze-%e2%80%93-a-backup-program-to-the-windows-task-manager/#comments Wed, 29 Sep 2010 12:14:19 +0000 admin http://www.the-computer-book.com/uncategorized/antifreeze-%e2%80%93-a-backup-program-to-the-windows-task-manager/ Unresponsive programs are a mess. They cause PCs to crash

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AntiFreeze – A Backup Program to the Windows Task Manager

]]> http://www.the-computer-book.com/uncategorized/antifreeze-%e2%80%93-a-backup-program-to-the-windows-task-manager/feed/ 0 Password-Protect Your USB Drive with USB Flash Security http://www.the-computer-book.com/uncategorized/password-protect-your-usb-drive-with-usb-flash-security/ http://www.the-computer-book.com/uncategorized/password-protect-your-usb-drive-with-usb-flash-security/#comments Sun, 12 Sep 2010 11:42:35 +0000 admin http://www.the-computer-book.com/uncategorized/password-protect-your-usb-drive-with-usb-flash-security/ Because of their portability, faster startup, robustness, and reliability, USB or flash drives are super popular these days. The two main uses of flash drives are to store on-the-go files and backup data stored on a PC, which most of the time contains sensitive or confidential data. Since USB disks are handy, they’re also prone to misplacement — a double-edge sword for its small size.

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Password-Protect Your USB Drive with USB Flash Security

]]> http://www.the-computer-book.com/uncategorized/password-protect-your-usb-drive-with-usb-flash-security/feed/ 0 Toggle Program Windows with Switcher http://www.the-computer-book.com/uncategorized/toggle-program-windows-with-switcher/ http://www.the-computer-book.com/uncategorized/toggle-program-windows-with-switcher/#comments Tue, 07 Sep 2010 12:11:53 +0000 Master http://www.the-computer-book.com/uncategorized/toggle-program-windows-with-switcher/ As an excellent replacement to Vista’s Flip and Flip 3D, Switcher offers more than just toggling different program windows. It’s a very handy program that can switch windows into three different views: tile, dock, and grid. It’s great for PCs with two or more monitors

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Toggle Program Windows with Switcher

]]> http://www.the-computer-book.com/uncategorized/toggle-program-windows-with-switcher/feed/ 0 Choose How Windows 7 Installs Updates http://www.the-computer-book.com/uncategorized/choose-how-windows-7-installs-updates/ http://www.the-computer-book.com/uncategorized/choose-how-windows-7-installs-updates/#comments Wed, 11 Aug 2010 12:45:05 +0000 Master http://www.the-computer-book.com/uncategorized/choose-how-windows-7-installs-updates/ Windows Update can keep your system secure from viruses and other malware by downloading and installing updates, patches, and fixes for the software you have installed on your PC. By default, Windows 7 downloads and installs these updates automatically whenever your computer is connected to the Internet

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Choose How Windows 7 Installs Updates

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